Leer.



J. S. DENNY.

LEER.

APPLICATION FILED FEB. 19, 1907.

908,399. Patenfi ad Dec. 29,1908.

(LSHEETB-BHBBT 1.

G t mm 1 J. S. DENNY.

LEI-m.

Arumu'ml FILED r33. 19. 1901.

Patented Dec. 29, 1908.

3 8HEETSSHBET 2.

anucul'cr.

Wilma:

Emma;

J. S. DENNY.

LEER.

APPLICATION FILED TEL 19, 1907.

Patented Dec. 29, 1908.

3 BHBBTB-SHBET 3,

MWWWW Wit" an flaw , Fig. showin the clutch shifting gearin of one ofthe supporting rollers of the feedfor treatment a predetermined period of sit of em loyin ower in these operations v y P is 'in side elevation and cross section the congene'r'ally or conventionally re resents the UNITED STATES 4 racism? OFFICE,

JOSEPH S. DENNY, 0F 'IAPUENTUM, PENNSYLVANIA, ASSIGNOR OF ONE-Tl IIBD TO JOHN A. DQQ'KTOR, OF TARENTUM, PENNSYLVANIA.

LEEB.

Bpeciflcafion'of Letters Patent.

Patent-id Deca9, 199% Application flied February 1!), i997. No. 868,244.

To all whom it may cone-em:

Be it known that I, Joseph S. Duunr, a citizen of the United States of America, residing at 'Iuientum, in the county of Allegheny and State of Penn lvania, have invented new and useful Improvements in Leers, of which the following is a specification.

This invention relates to impl ovements in leers or annealing furnaces employed in til/as art of manufacturing glass wave, the primary object of the invention being to provide an automatic conveyor for maintain iug the glass were in the annealing furnace time and then discharging the same on to the delivery apron or device, and to provide fuedingl'and delivery devices designed to cm veyt e glassware by gravity to and from the furnace, thus obviating the necesand as a result feature.

In the accompanying drawings,--Figure 1 is a side elevation of a leer constructed in accordance with my invention, the furnace and conveying mechanism therein being gen erally indicated. Fig. 2 is a top plan view of the same. Fig. 3 is a detail view showing ucing the cost of menustruotion of the roller supporting rails. Fig. 4 is a sectional elevation looking from the rear toward the operating mechanism of the conveyor, showing the 'parts in the position they assume just prior to the release of the clutch mechanism to stop the motion of the conve er. Fig. 5 is a section on line 55 of in lnner. side e ovation. Fig. 6' is a dtai sectionof Fi Fig. Tis'a longitudinal section throng one of th; ends in and deliverin devices, the section being ta en on'line 7-3 ofFig. 8. Fig. 8 is an. end elevation of the roller. Figs; 9 and 10 are cross sections thereof, taken respectively on the lines 9 9 and 10-10 of Fig. 7.

Referring to the drawings, the numeral 1 reboit or furnace, 2 the fee mechanism for conveying the glassware thereto, and 3 journals of t the delivery mechanism for conveying the The feed comprises one or more frames 'or tables i sup orted upon 1e s 5 carried by wheels or ro lers 6 to one Is said table or tables to be oved into and out of position between the furnace and suitable supports 7 carrying the boxes or mi 8 contaming glassware to be treated. he demechanism 3 is preferably stationary livery and as a supporting base of masonl y or other suitable materlahsaid' deviceheing arranged to convey the treated were from the furnace to suitable sugports 8 inthe packing house or at the esired delivery point. The said fsedingand delivering devices are inclined downward toward and from the inlet and outlet of the furnace and are provided with transversely arranged supporting rollers 9 ada' ted to freely turn to permit the trays to s ld'e'freely'over'the same by gravity. The rolls are mounted upon supportin rails 10' formed 'v'vith notches or s; beari'n' s 11 receiving'the e rolls. ach roll is hollow or tubular and chmprises a cylindrical body 12 closed at each end by a'head' 18provided with a central opening 14 and an 'anniilar groove 15. Bearings for supporting the of the roll occu y and royecj;- through the opening 14 an "'com'pr se inn-er and outer members '16 and 1'1, the opposing 'facesof which are beveled to form cones coiipera'ting with the groove 15 to form a raceway for antiiriction bearing balls 18. A screw shank 19 projects outwardly from the inner member 1,6, and the member 17 'is threaded thereon for ad'ustment to compensate for wear and is 100 ed'in position by a jam nut 20. The projecting portion of the member'll extends outwardly beyond the head 13 toform a journal for the end of the roll which seats in its receivi recess 11 in the adjacent supporting mi 10. The rolls are thus free to turn upon their bearings, and the trays will thus slide over the rol in surface formed thereby bygravity, thus viating the necessity of em loymg. the ordinary conve mg gprons an dispensin with the negro power to carry the material.

bis

their normal position The glassware entering the mouth of the furnace from the feeding device 2 passes onto a traveling apron or belt 21, comprising a pair of side r-nuins 214 connected by transierse rods or bars 2:5. The chains pass over sprocket wheels 22" on transverse kiilttii: 34 and 2), and operating means is employed in connection with shaft 2.) to imerinit tently o )erate said belt, by which the anatorial will be held a detcrmii'iate length of time in the furnace and then discharged on to the supporting rollers of the delivery device 3.

Keyed to shaft 25 is a pinion 26 meshing with a drive gear 27 loose on a continuously driven shaft 28, which may be operated from any suitable source of power. The gear 27 is limited in sliding n'iorement in one direction by a collar or head at), and its hub is formed to provide a clutch member 30. The outer side of the clutch member 30 is formed with a tapered recess to receive the tapered ortion of a coacting clutch member or coiiar 31 feathered to slide upon and rotate with the shaft, which collar is normally forced away from the clutch member by a coiled sprin 32. A sleeve 33 is loose on the shaft an carries pivoted dog's 34 having outwardly curved, beveled or flared short forward ends or armsto normally engage the beveled rear surface of the conical clutch member 31, and having longer rear ends or'arms curved, beveled or flared to a greater de me to engage the forward end of a seconcF collar 35 loose on the shaft. Fig. 4 shows the arts moved from to throw clutch member 31.into engagement with clutch member 80 to lock the gear 27t'o the shaft. In the normal or; retracted sitions of such parts, the forward ends 0 do s 34 bear'against the rear beveled surface 0 the'eone 31, while the tips of the rear ends of the do engage the forward portion of the bevele i surface of the sleeve 35,"whereby the forward ends of the dogs are spread apart and permit sufficient backward movement of cone 31, ander expansion of spring 32, to maintain said cone out of frictional engagement wilhthe clutch face of hub-.30., Upon the forward movement of the sleeve 35, the beveled face thereof forces the long arms of the dogs outward, thus causing the beveled short arms thereof to exert pressure upon the beveled face of the cone 31, whereby the latter is forced forward against the resistance of the snrinrr 32 to frictionally outrage tho hub 80. the short ends of the dogrs then movin behind the rear face of the cone. as shown in Fitz. 4. The wheel 27 is thus clutched to the shaft 98 to tr-m frr motion to the apron. and it'will be observed that tlnforwardniovcmeut of tip; sleeve 35 may iltf ,31, 33, 3-l and 35 may continued through the yielding action of the dogs, \viioso 'loru'nrd ends swing in toward the shaft 2:3, lhus allowing tle sleeve 35 to have the required range 01' l'novenicnt. As the short arms of llio dogs not. only flare or diverge but have ihrir inner faces beveled, and as lhr lath-r bear in the fully projected posit ion oi the (cone 31 against the rear angular surlat'o of the cone at the intersection of its rear apered portion and flat rear face, as shown lll l ie'. 4-, it will be understood that such arms lend to swing outward under the pressure of the cone 31 thereon forced. backward by the spring 32 as soon as the pressure of the sleeve 35 on the long arms of the dogs is relaxed, the pressure of the spring 32 being amply sullicient to overcome the action of centrifugal force in tending to throw the long arms or the do s outwardly and the short arms inwardl w iich force is, moreover, comparatively s ight on account of the comparatively low speed of rotation of shaft 28. Hence, when the sleeve 35 moves rearwardly, or in the reverse direction to that before described, and its pressure on the long arms of the dogs is relaxed, the

short arms of the dogs are forced outward by the backward movei'nent of the cone 31 under the action of sprin St! id cone is retracted by the spring 3 2, thus disenfgaging the wheel 27 from the shaft 28. The 'rictional engagement between the parts be sufficient to adapt them to rotate in unison, but the resistance of the collar 35 to rotation may be such as to hold the dogs 34 and their supporting sleeve 33 against rotation, in which event the short arms of the dogs willride in contact with the revolving cone 31. It will thus be seen that through the operation of the dogs by the sleeve 35, the cone 31 will be thrown into and out of engagement with the clutch member 30 thus oontrolling the action of the gear 2 v The collar 35 is connected with a shifter bar 36 secured to a shaft 31 having a threaded portion 38 on which-is a gear nut 39. a rocker bracket 40 pivoted a .41 from a suitable support and having a projectin arm 42. The braeket comprises spaced plates beta' cen which the gear nut 39 is arranged, and also arranged between said lates are food and reversing gears 43 and H. -'lhe gear 43 meshes with the gear 44,

32, whereby I one end of the shaft 87 is 'ourn-aled in courses 47 with one end of an intermcdmtcly pivoted trip lever the opposite end which (711'- ries u laterally cxtcndlng linger 49 adapted D be pcriodicully engaged by a trip cam tit) curried by 1' disk 5! timed on the shaft 28. A spring 512 point to hold the tree end of the trip lever roimully ulevuted, to depress the link 'l'i to hold the rocker bracket in the reverse nosition to that shown in Fig. 5, in which gen! 4?; will be in mesh with gcur 45,

Fig, it represents the operative position of the parts of the belt, shifting nii :chanism :it the time of the per od of release, when the cum 50 has just cleared the trip lever 48 and said lever has b en opcintetl by the Spring 52 to tilt, the bracket; from the position shown in Fig 5 to bring, the gear -13 into engagement with gear tor the backward movement of the shaft 37 to' retrnct the clutch mechanism. l lfifilllnlllg that the thread 38 is a left-hand thread, and that a tray of Wnrc has just been delivered upon tho belt 2i to remain in the furnace :1 predetermined length of time, it will be under stood, that the moment the can} 50 moves out. of engagement with lever 48, the gcur l3 wiit be thrown into mesh with gear 45, thus transmitting retrograde motion to the gear nut 39 to move the shaft 37 to the right in Fig. 4, whereby the collar 35 will be shifted inwardly, thus effecting the release of the clutch mechanism in an obvious manner to stop the motion of the belt. T he time of rest of the belt may vary according to the structure and arrangement of the cam 50, which, at the end of said time, engages the linger 49 and trips the lever 48 against the reslstance of spring 52 to throw the gear 44- in mesh with the gear 45, whereby reverse motion will be imparted to shaft 37 throw the clutch gearing into action, thus nxing the gear 27 to the shaft 28 and transmitting motion to the shaft: 535 to start the COIN-lift?! 21 or the discharge of the treatedmiitcrial and feed into the furnace of the succeeding tiny. \Vhcn the cam passes the finger the trip mechanism will be operated again by the spring to effect a repetition of the operation lime dcscril'ied. it will thus be seen that ilh: material will be fed by gravity to the furnace and discharge by gravity iherefr'u'n and will be retained in the furnace d gn'cdctvrinincd length of time and tin-u nutoniatirzally ejected, the operation being such as to secure economy in the treatment of thc goods and accuracy in subjectin; the same for the proper period to the an nccling process.

Having lll'litS described the invention, what is cL-zinmd as new, is:-

l. in a leer, the combination of a furnace, an endless conveyor therein having a driv-' I ing shaft, a continuously driven main driving shaft, gearing between suid shafts, including it loose gear, clutch mechanism for throwing said loose gear into and out of act iol1,:-;l| ilting means for the clutch mcchun ism driven by the main shaft. and including it screw shaft, and trip mechanism actuated by the main shaft for operating said screw shaft in reverse directions.

2. ln av leer, the combination of u furnace, an endless conveyer therein having a driving shaft, a continuously driven main driving; shaft, gears connecting said shafts, one of on id gears being a loose gear, clutch mechanism for throwing said loose gear into und out of action, it screw shaft, a gear not for actuating said shaft, reversing gearing actuated by the main driving shaft for operating the gear nut, means actuated b the screw shaft for operating the clutc mechanism, and tri J mechanism actuated by the main driving shaft for controlling said reversing gear.

3. ln ulcer, the combination of a furnace, an endless conveyer therein having a driving shaft, a continuously driven main driving shaft, intermeshing gears upon said shafts, the gear upon the main drivlng shaft being loose thereon, clutch mechanism slidubly mounted on said shaft, for fixin and releasing the loose gear, a screw shait for operating the clutch mechanism, a gear nut for actuating the screw shaft, reversin earing operated by the main driving sha t, or turning said nut in reversedirections, and means actuated and controlled by the main driving shaft for shifting said reversing gearing.

4. In a leer, the combination of a furnace, an endless conveyer therein having a driving shaft, a continuously driven mam drivin shaft, interrneshing gears between said shafts, the car 11 on the main shaft Bein loosc, clutci ince ianism slidable on sai shaftfor fixing and releasing said loose your, a screw shaft movable in 0p osite direrttiuns to control said clutch mec anism, a nut for operating the said shaft,,gearing act united by the main driving shaft for operating the nut, said gearing including pimons for driving the nut in reverse directions, and trip mechanism controlled by the main shait for alternately rendering said pinions operative to drive the nut in reverse directions.

5. In a lccr, a furnace, an endless conveyer therein having a driving shaft, 11 continuously driven ninindriving shaft, intermeshlug gears upoirsaid shafts, the gear upon the main shaft being loose, sliding clutch mechanism on the main shaft for finiinq, and releasing the loose gear, a screw shaft for shifting said clutch mechanism, a gear nut for operating said shaft, gearing for actuating the nut comprising a main gear on the main shaft and a pair of piniuns adaplud to be alternately thruwn inLu and out of mvsh with said main gear, one of said pinions being in iniurmeshiug rclutiun with the other i .J will. the gear nut, 21 mclung support. For

bu nut and pinious, and trip mechanism "ctuated by the mam shalt 101' rocklng sand suppul'l in opposite directions at predeterminur] inlurmla.

In tostiu'nony whereof, I MIX my signature in prosuncc of two witnesses.

JOSEPH S. DENNY W il 111358052 N EWTON H. SKILLEN, I FRANK DENNY. 

